JPS6247617B2 - - Google Patents
Info
- Publication number
- JPS6247617B2 JPS6247617B2 JP7741678A JP7741678A JPS6247617B2 JP S6247617 B2 JPS6247617 B2 JP S6247617B2 JP 7741678 A JP7741678 A JP 7741678A JP 7741678 A JP7741678 A JP 7741678A JP S6247617 B2 JPS6247617 B2 JP S6247617B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- heat exchanger
- model
- fin
- heat transfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002184 metal Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
- B22C9/26—Moulds for peculiarly-shaped castings for hollow articles for ribbed tubes; for radiators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
本発明は多数の空隙が連続してなる通気性の高
い多孔質金属をフインとして用いた熱交換器の製
造方法に関するもので、本発明における熱交換器
はフアンコイルユニツトに用いる対空気用熱交換
器、冷凍機、空調器に用いる対空気用蒸発器、凝
縮器など、温度差のある２流体の間で熱交換させ
る分野に利用することができる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a heat exchanger using a highly air permeable porous metal having a large number of continuous voids as fins. It can be used in fields where heat is exchanged between two fluids with a temperature difference, such as air-to-air heat exchangers used in refrigerators, air-to-air evaporators and condensers used in air conditioners.
本発明に近い技術として、溶解金属中にガスを
発生する物質を投入して、溶解金属を発泡させて
得られる発泡金属体をフインとして用いる熱交換
器や金属粒子や焼結方法などに接合固着させてフ
インとして用いる熱交換器が知られている。前者
は連続空孔相互の連結部が極めて細くくびれた
り、中に一部独立空孔を生じたりして流体の通路
抵抗が大きくなつたり、また全体にわたつて一様
な密度に成形することが困難であるなどの問題点
がある。また後者は粒子と粒子の間隙が流体の通
る隙間であり、あまり大きな空隙率を得ることが
できないし、また製造時間が多くかかつたり、価
格が高いなどの問題がある。以上の問題点からこ
れらの熱交換器は実用の域に達していない。従つ
て、現在一般に使われているフイン付熱交換器は
板状のフインを熱交換パイプに直角にできるだけ
密に配列して、熱交換を行なう伝熱面積を大きく
するようにしてクロスフイン形熱交換器が大部分
を占めている。このタイプの熱交換器は伝熱管が
蛇行管もしくはヘツダ接続形の平行管であるを問
わず、先ずフインを多列で装置した後、管接続処
理を行わねばならず、組立が面倒であるばかりで
なく、組立工程を多く要して、工期が長く、生産
性に難点がある。さらにクロスフイン形の熱交換
器では、フインの間隙を流体が流れるため、むや
みにフイン間隔を挟くして、フインの数を増して
伝熱面積を大きくすることは流体の通路抵抗の増
加および加工上の制約もあつて困難である。 As a technology similar to the present invention, a foamed metal body obtained by injecting a gas-generating substance into molten metal and foaming the molten metal is used as a fin for bonding and fixing to heat exchangers, metal particles, sintering methods, etc. Heat exchangers that are used as fins are known. In the former case, the connection between continuous holes is extremely narrow, some independent holes are formed inside, which increases the fluid passage resistance, and it is difficult to mold the material to have a uniform density throughout. There are problems such as difficulty. Further, in the latter case, the gaps between particles are the spaces through which fluid passes, and there are problems such as it is not possible to obtain a very large porosity, it takes a long time to manufacture, and the price is high. Due to the above problems, these heat exchangers have not reached the level of practical use. Therefore, the currently commonly used heat exchanger with fins is a cross-fin type heat exchanger in which the plate-shaped fins are arranged as densely as possible at right angles to the heat exchange pipe to increase the heat transfer area for heat exchange. Vessels make up the majority. In this type of heat exchanger, regardless of whether the heat transfer tubes are meandering tubes or parallel tubes with header connections, it is necessary to first install multiple rows of fins and then perform the tube connection process, which makes assembly difficult. However, it requires many assembly processes, takes a long time, and has problems with productivity. Furthermore, in cross-fin type heat exchangers, fluid flows through the gaps between the fins, so increasing the heat transfer area by increasing the number of fins by unnecessarily narrowing the spacing between the fins increases fluid passage resistance and is difficult to process. This is difficult due to the constraints of
本発明は従来の熱交換器が上記の如き問題点を
有していることに着目して、新規な加工技術の採
用により問題点の解消を可能にし、かつ伝熱性能
を向上させ、軽量小型化をも可能にしたものであ
つて、従来熱交換器のフインに相当する部分を、
既に蛇行管などに加工された伝熱管の周囲に、一
体成型により結着させ得る如くした新規な熱交換
器の製造方法を提供し得ることを特徴とするもの
である。 The present invention focuses on the fact that conventional heat exchangers have the above-mentioned problems.The present invention makes it possible to solve the problems by adopting a new processing technology, improves heat transfer performance, and makes it lightweight and compact. This makes it possible to replace the fins of conventional heat exchangers with
The present invention is characterized in that it is possible to provide a novel method for manufacturing a heat exchanger that can be integrally molded around a heat exchanger tube that has already been processed into a serpentine tube or the like.
以下本発明の一実施例を添付図面に従つて具体
的に説明する。 An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
本発明を空気熱交換器に用いた実施例を第１
図、第２図に示す。これらは伝熱管１を蛇行状に
成型し、この周囲を厚い層をもつマツト状に形成
したフインブロツク２で、伝熱管１の管端部を露
呈させておおつた一体成型の熱交換器であり、第
１図の実施例は蛇行状に成型した伝熱管１の直管
部分をフインブロツク２に埋設した熱交換器、第
２図の実施例は伝熱管１の直管部分と曲管部分を
ともに埋設した熱交換器である。 A first example of using the present invention in an air heat exchanger is shown below.
As shown in Fig. 2. These are integrally molded heat exchangers in which the heat exchanger tubes 1 are formed into a meandering shape, and the ends of the heat exchanger tubes 1 are covered with a fin block 2 formed into a mat shape with a thick layer around the heat exchanger tubes. The embodiment shown in Fig. 1 is a heat exchanger in which the straight part of the heat exchanger tube 1 formed in a meandering shape is buried in the fin block 2, and the embodiment shown in Fig. 2 is a heat exchanger in which both the straight part and the curved part of the heat exchanger tube 1 are buried. This is a heat exchanger.
さらにフインブロツク２は第３図に示す拡大図
のように細線状または第４図に示すように種々の
凹凸をもつた細線状のフイン３がスケルトン状を
呈した多孔質金属であり、空気はスケルトン状を
したフイン３の間の多数の空隙４を流れるように
なつており、伝熱管１内を流れる冷媒、水などの
流体とフイン３を通して熱交換を行わせるように
なつている。 Furthermore, the fin block 2 is a porous metal in which the fins 3 are shaped like thin lines as shown in the enlarged view of FIG. The fluid flows through a large number of gaps 4 between the shaped fins 3, and heat is exchanged with a fluid such as refrigerant or water flowing inside the heat transfer tube 1 through the fins 3.
次に第１図、第２図に示した熱交換器の製法に
ついて説明する。 Next, a method for manufacturing the heat exchanger shown in FIGS. 1 and 2 will be explained.
第１図に示す実施例はまず発泡ウレタンなどの
連続空孔を有する通気性の良好な樹脂を模型と
し、この模型の空孔を流動状の鋳型材料で満たし
模型除去前鋳型を成形する。この鋳型材料として
は、鋳型用石こう粉末と水からなるスラリー、食
塩を添加した石こうと水からなるスラリー、270
メツシユ以下のSiO2粉末にエチルシリケートと
工業用エチルアルコールと水よりなる粘結剤を混
合したスラリー、その他一般の鋳型材料を用い
る。 In the embodiment shown in FIG. 1, first, a resin with good air permeability having continuous pores such as foamed urethane is used as a model, and the pores of this model are filled with a fluid mold material to form a mold before the model is removed. The mold materials include a slurry of gypsum powder and water for molds, a slurry of gypsum and water to which salt has been added, 270
A slurry of SiO 2 powder of less than mesh size mixed with a binder consisting of ethyl silicate, industrial ethyl alcohol, and water, and other general mold materials are used.
樹脂模型に鋳型材料を満たし模型除去前鋳型を
成形したら、これを加熱などの操作により模型の
樹脂を気化などにより消失除去して樹枝状の連続
空孔を形成し、第５図に示す如き両面に伝熱管の
直管部分の通る溝７を有する分割フイン鋳型５
や、第６図に示す如き片面に伝熱管の直管部の通
る溝７を有する分割フイン鋳型６を成形する。こ
れら分割フイン鋳型５，６の形状は、樹脂模型の
段階で成形するのが最も好ましいが、樹脂模型に
鋳型材料を満たし、模型除去前鋳型を成形後に成
形することも可能である。また溝７の大きさは、
伝熱管径より幾分大きくしておく。次にこの分割
フイン鋳型５，６をあらかじめ蛇行状などに成型
された伝熱管１に複数個伝熱管１の長さ方向に平
行に組み込む。この組み込み時、分割フイン鋳型
の接触面に、流動状の鋳型材料を薄く塗布してお
くと、鋳型間にすきまを生ずることなく接合する
ことができる。分割フイン鋳型５，６を複数個第
７図のように組み込んで、伝熱管１の周囲部にフ
イン鋳型を形成したら、フイン鋳型を容器内に満
たされた溶融金属に接触させ、フイン鋳型の空孔
内を減圧したり、又は容器内の溶融金属を加圧す
るなどの圧力操作によりフイン鋳型の空孔内およ
び鋳型と伝熱管１のすきまに溶融金属を充填し、
溶融金属が凝固した後鋳型を除去する。この金属
材料としては、Al、Cu、Feなどの熱伝導性の良
好な材料の他に、一般の鉄系合金やPb、Zn、Mg
などの非鉄合金についても用いることが可能であ
る。 After filling the resin model with mold material and forming the mold before removing the model, the resin in the model is removed by vaporization by heating or other operations, forming continuous dendritic pores, and forming a double-sided mold as shown in Figure 5. A split fin mold 5 having a groove 7 through which the straight pipe portion of the heat transfer tube passes.
Alternatively, a split fin mold 6 having a groove 7 on one side through which the straight pipe portion of the heat transfer tube passes as shown in FIG. 6 is formed. It is most preferable to mold the split fin molds 5 and 6 at the stage of forming the resin model, but it is also possible to fill the resin model with mold material and mold the mold after removing the model. Also, the size of the groove 7 is
Make it slightly larger than the diameter of the heat transfer tube. Next, a plurality of these split fin molds 5 and 6 are assembled in parallel to the length direction of the heat exchanger tube 1 into the heat exchanger tube 1 which has been previously formed into a meandering shape or the like. At the time of assembly, by applying a thin layer of fluid mold material to the contact surfaces of the split fin molds, the molds can be joined without creating any gaps between the molds. After a plurality of split fin molds 5 and 6 are assembled as shown in FIG. 7 to form a fin mold around the heat exchanger tube 1, the fin mold is brought into contact with the molten metal filled in the container to fill the void in the fin mold. Filling the holes of the fin mold and the gap between the mold and the heat exchanger tube 1 with molten metal by pressure operation such as reducing the pressure inside the hole or pressurizing the molten metal in the container,
After the molten metal has solidified, the mold is removed. In addition to materials with good thermal conductivity such as Al, Cu, and Fe, these metal materials include general iron-based alloys, Pb, Zn, and Mg.
It is also possible to use non-ferrous alloys such as.
これにより、蛇行状などに成型された伝熱管１
の直管部分の周囲には、細線状あるいは種々の凹
凸をもつた細線状のフイン３がスケルトン状を呈
した連続空隙を有する多孔質金属のフインブロツ
ク２が一体成型により結着される。 As a result, the heat exchanger tube 1 formed into a meandering shape etc.
A porous metal fin block 2 having continuous voids and having a skeleton shape of thin wire-like fins 3 or thin wire-like fins 3 having various irregularities is integrally molded around the straight pipe portion of the fin block 2 .
尚上記の説明では、あらかじめ成形された分割
フイン鋳型を複数個伝熱管に組み込むようにして
いるが、この他に、模型除去前鋳型を第５図、第
６図に示すような形状に成形し、これらを複数個
伝熱管に組み込み、その後加熱などの操作により
模型の樹脂を気化などにより消失除去して、連続
空孔を有するフイン鋳型を形成するようにしても
よい。この組み込み時、鋳型材が硬化していた
り、また硬化していなくても鋳型材が少ない場合
には、鋳型の接触面に流動体の鋳型材料を薄く塗
布しておくと、鋳型間にすきまを生ずることなく
接合することができる。 In the above explanation, a plurality of pre-formed split fin molds are incorporated into the heat exchanger tube, but in addition to this, the mold before model removal is molded into the shape shown in Figs. 5 and 6. A fin mold having continuous pores may be formed by incorporating a plurality of these into a heat transfer tube, and then performing heating or other operations to remove the resin of the model by vaporization or the like. At the time of assembly, if the mold material is hardened, or if there is not enough mold material even if it is not hardened, it is recommended to apply a thin layer of fluid mold material to the contact surfaces of the molds to reduce the gap between the molds. It is possible to join without any formation.
第２図に示す実施例は、蛇行状などに成型され
た伝熱管１の曲管部分も共にフインブロツク２内
に埋設した熱交換器である。このような熱交換器
を製造する場合には、伝熱管１の曲管部分に第８
図および第９図に示す分割フイン外鋳型８および
分割フイン内鋳型９を用いる。まず第１図に示し
た熱交換器の製法と同じように、樹脂模型と鋳型
材料を用いて第５図、第６図に示すような直管部
分用の分割フイン鋳型５，６と第８図および第９
図に示すような分割フイン外鋳型８および分割フ
イン内鋳型９を成形する。次にこれらの鋳型５，
６，８，９を第１０図に示すように組み込む。こ
の後、第１図に示す熱交熱器の製法と同じように
製造することにより、伝熱器１の周囲部には、伝
熱管１の流開口端以外を完全に埋設したフインブ
ロツク２が一体成型により結着される。これらの
製造方法において、鋳造時に分割フイン鋳型５，
６および分割フイン外鋳型８、分割フイン内鋳型
と伝熱管１との間に形成されたすきまに充填され
た溶融金属は、冷却固化する時、金属が収縮する
が、この時、伝熱管１のまわりの溶融金属が金属
管状となり、さらに収縮することにより伝熱管１
に強い接触圧力を加える状態になり、伝熱管１と
フインブロツク２との接合がより良好となる。 The embodiment shown in FIG. 2 is a heat exchanger in which the curved tube portion of the heat transfer tube 1 formed in a meandering shape is also buried in the fin block 2. When manufacturing such a heat exchanger, an eighth
A split fin outer mold 8 and a split fin inner mold 9 shown in the figure and FIG. 9 are used. First, in the same way as the manufacturing method of the heat exchanger shown in Fig. 1, split fin molds 5, 6 and 8 for straight pipe parts as shown in Figs. 5 and 6 are made using a resin model and mold material. Figure and 9th
A split fin outer mold 8 and a split fin inner mold 9 as shown in the figure are molded. Next, these molds 5,
6, 8, and 9 are assembled as shown in FIG. Thereafter, by manufacturing the heat exchanger in the same manner as shown in FIG. Bonded by molding. In these manufacturing methods, the split fin mold 5,
When the molten metal filled in the gap formed between the split fin outer mold 8 and the split fin inner mold and the heat transfer tube 1 is cooled and solidified, the metal contracts. The surrounding molten metal becomes a metal tube, and as it further contracts, the heat exchanger tube 1
A strong contact pressure is applied to the heat exchanger tube 1 and the fin block 2, and the bonding between the heat exchanger tube 1 and the fin block 2 becomes better.
これにより蛇行状などに成型された伝熱管１の
周囲部には、細線状あるいは種々の凹凸をもつた
細線状のフイン３がスケルトン状を呈した３次元
の連続空隙を有する多孔質金属のフインブロツク
２が一体成型されるとともに、伝熱管１とフイン
ブロツク２の結着がさらに強力に行なわれるよう
になる。 As a result, around the periphery of the heat exchanger tube 1 formed into a serpentine shape, a porous metal fin block with three-dimensional continuous voids in which thin wire-like fins 3 or thin wire-like fins 3 with various irregularities exhibit a skeleton shape is formed. 2 are integrally molded, and the bonding between the heat exchanger tube 1 and the fin block 2 becomes even stronger.
以上の製法により製作された熱交換器におい
て、熱交換される空気は、フインブロツク２にお
けるスケルトン状をしたフイン３の間の無数の連
続空隙４を流路抵抗を殆んど受けることなく、速
やかに流れ、この流通過程において伝熱管１内の
流体とフイン３を通して効率よく熱の授受が行わ
れる。 In the heat exchanger manufactured by the above manufacturing method, the air to be heat exchanged quickly passes through the countless continuous gaps 4 between the skeleton-shaped fins 3 of the fin block 2 with almost no flow resistance. During this flow process, heat is efficiently exchanged through the fluid in the heat transfer tube 1 and the fins 3.
本発明における熱交換器のフイン３は網目状３
次元的に配置されているので、板状フインに比べ
伝熱面積を増加させることができ、さらに網目状
に流体の通路が入り組んでいるため、常に流体が
撹拌され温度境界層の発達を減ずる効果があり、
高い伝熱性能を出ることができ、極めて有効に熱
の授受を行うことができる。 The fins 3 of the heat exchanger in the present invention are mesh-like 3
Because they are arranged dimensionally, the heat transfer area can be increased compared to plate-shaped fins, and because the fluid passages are intricately meshed, the fluid is constantly agitated and the development of a temperature boundary layer is reduced. There is,
It has high heat transfer performance and can transfer heat extremely effectively.
一般の熱交換器において、空気との熱伝達率は
ｈ∝ｄ-n （一般にｎ＞０）
但し
ｈ：熱伝達率
ｄ：代表直径
として表わされることは周知である。上式はｄが
小さい方が熱伝達率は大きくなることを示してい
る。 It is well known that in a general heat exchanger, the heat transfer coefficient with air is expressed as h∝d -n (generally n>0), where h: heat transfer coefficient d: representative diameter. The above formula shows that the smaller d, the larger the heat transfer coefficient.
本発明による熱交換器のフイン３は非常に細い
細線状のものが製作可能であり、伝熱性能を一層
向上させることができる。 The fins 3 of the heat exchanger according to the present invention can be manufactured in the form of very thin wires, and the heat transfer performance can be further improved.
以上述べたように、本発明の製造方法における
熱交換器はクロスフイン形熱交換器と比較して、
単位体積当りの伝熱面積も大きくでき、伝熱性能
も高くできるので小形化が可能であり、また多孔
質金属は軽量構造であるので、熱交換器全重量を
軽量化し得る。また製造工程において、あらかじ
め伝熱管を蛇行状などに成型して置いて、その周
囲にフインブロツクを成型したので、Ｕ字管の挿
入拡管などの面倒な処理工程が省略でき、また鋳
型の組み込みなどが容易になり製造が極めて簡単
になる。さらに溶融金属の冷却固化時に収縮など
によりフインブロツクと伝熱管との結着が良好と
なり、フインと伝熱管の間の熱の伝わりが良くな
る。 As described above, the heat exchanger according to the manufacturing method of the present invention has the following characteristics compared to the cross-fin type heat exchanger:
Since the heat transfer area per unit volume can be increased and the heat transfer performance can be improved, the size can be reduced, and since porous metal has a lightweight structure, the total weight of the heat exchanger can be reduced. In addition, in the manufacturing process, heat transfer tubes are formed in advance into a meandering shape, and a fin block is formed around them, which eliminates troublesome processing steps such as inserting and expanding U-shaped tubes, and also eliminates the need for assembling molds. This makes manufacturing extremely easy. Further, when the molten metal is cooled and solidified, the fin blocks and the heat transfer tubes are bonded well due to shrinkage, etc., and the heat transfer between the fins and the heat transfer tubes is improved.
第１図は本発明の熱交換器の製造方法の一例に
よる熱交換器を示す斜視図、第２図は本発明の熱
交換器の製造方法の他の例による熱交換器を示す
斜視図、第３図および第４図は第１図および第２
図に示す熱交換器におけるフインブロツクの一部
拡大図、第５図および第６図は分割フイン鋳型の
一例を示す斜視図、第７図は第１図に示す熱交換
器の製造方法を説明する斜視図、第８図および第
９図は、第２図に示す熱交換器を製造するために
用いる分割フイン外鋳型および分割フイン内鋳型
の一例を示す斜視図、第１０図は第２図に示す熱
交換器の製造方法を説明する斜視図である。
１……伝熱管、２……フインブロツク、３……
細線状のフイン、５，６……分割フイン鋳型、８
……分割フイン外鋳型、９……分割フイン内鋳
型。
FIG. 1 is a perspective view showing a heat exchanger according to an example of the heat exchanger manufacturing method of the present invention, FIG. 2 is a perspective view showing a heat exchanger according to another example of the heat exchanger manufacturing method of the present invention, Figures 3 and 4 are similar to Figures 1 and 2.
FIG. 5 and FIG. 6 are perspective views showing an example of a split fin mold, and FIG. 7 explains a method for manufacturing the heat exchanger shown in FIG. 1. 8 and 9 are perspective views showing an example of an outer split fin mold and an inner split fin mold used to manufacture the heat exchanger shown in FIG. 2, and FIG. It is a perspective view explaining the manufacturing method of the heat exchanger shown. 1...Heat transfer tube, 2...Fin block, 3...
Thin line-shaped fins, 5, 6...Divided fin mold, 8
...Split fin outer mold, 9...Split fin inner mold.
Claims (1)
この模型の空孔に流動状の鋳型材料を満たして模
型除去前鋳型を成形後、加熱などにより樹脂模型
を消失除去して連続空孔を有する分割フイン鋳型
を成形し、あらかじめ蛇行状などに成型された伝
熱管の周囲部に、前記分割フイン鋳型を複数個組
み込み、次に圧力操作により溶融金属を鋳型空孔
内に充填した後、溶融金属を凝固させると共に鋳
型材料を除去することにより、蛇行状などに成型
された伝熱管の周囲部に、３次元の連続空隙を有
する多孔質金属を一体成型により結着したことを
特徴とする熱交換器の製造方法。 ２ ３次元の連続空孔を有する樹脂を模型とし、
この模型の空孔に流動状の鋳型材料を満たして模
型除去前鋳型を成形し、あらかじめ蛇行状などに
成型された伝熱管の周囲部に前記模型除去前鋳型
を複数個組み込み、この後加熱などにより樹脂模
型を消失除去して連続空孔を有するフイン鋳型を
成形し、次に圧力操作により溶融金属を鋳型空孔
内に充填した後溶融金属を凝固させると共に鋳型
材料を除去することにより、蛇行状などに成型さ
れた伝熱管の周囲部に、３次元の連続空隙を有す
る多孔質金属を一体成型により結着したことを特
徴とする熱交換器の製造方法。[Claims] 1. A resin having three-dimensional continuous pores is used as a model,
The holes in this model are filled with fluid mold material to form a pre-removal mold, and then the resin model is removed by heating etc. to form a split fin mold with continuous holes, which is pre-molded into a serpentine shape etc. A plurality of the split fin molds are installed around the heat transfer tube, and then the molten metal is filled into the mold holes by pressure operation, and the molten metal is solidified and the mold material is removed. 1. A method of manufacturing a heat exchanger, comprising integrally molding a porous metal having three-dimensional continuous voids around a heat transfer tube formed into a shape. 2 A resin with three-dimensional continuous pores is used as a model,
The cavities of this model are filled with fluid mold material to form a pre-model removal mold, and a plurality of the pre-model removal molds are assembled around the heat transfer tube, which has been previously formed into a serpentine shape, and then heated, etc. The resin model is disappeared and removed to form a fin mold with continuous pores, and then the molten metal is filled into the mold pores by pressure operation, and the molten metal is solidified and the mold material is removed. 1. A method of manufacturing a heat exchanger, comprising integrally molding a porous metal having three-dimensional continuous voids around a heat transfer tube formed into a shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741678A JPS555151A (en) | 1978-06-28 | 1978-06-28 | Production of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741678A JPS555151A (en) | 1978-06-28 | 1978-06-28 | Production of heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS555151A JPS555151A (en) | 1980-01-16 |
| JPS6247617B2 true JPS6247617B2 (en) | 1987-10-08 |
Family
ID=13633330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7741678A Granted JPS555151A (en) | 1978-06-28 | 1978-06-28 | Production of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS555151A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171561U (en) * | 1987-04-28 | 1988-11-08 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8215372B2 (en) | 2008-10-17 | 2012-07-10 | Brp Us Inc. | Method and apparatus for consumable-pattern casting |
| FR2992716A1 (en) * | 2012-06-29 | 2014-01-03 | Filtrauto | POROUS STRUCTURE FOR FLUID INCORPORATING A CONDUIT |
| CN109207776B (en) * | 2018-10-09 | 2021-02-26 | 古汉汽车零部件(常熟)有限公司 | Composite foam material preparation system and method |
| CN111112580A (en) * | 2020-01-13 | 2020-05-08 | 芜湖泓鹄材料技术有限公司 | Forming method of heat dissipation channel of automobile stamping die casting |
-
1978
- 1978-06-28 JP JP7741678A patent/JPS555151A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171561U (en) * | 1987-04-28 | 1988-11-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS555151A (en) | 1980-01-16 |
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